The Remingtons are shipped with an intentionally high front sight.
Older Pietta's and Uberti still may have sights closer to the originals that shot high at 25 yds.
If it can sustain a speed of ~25,000 mph, it will shoot perfectly flat in relation to the surface of the Earth... which won't be a flat trajectory, really, but rather a circular track some 8000 miles in diameter. Remember to duck about an hour later...